Question

If a mother was homozygous for a dominant X-linked trait, how many of her sons and daughterswould have the trait?

Answer 1

As you can see in the punnet chart. The trait (N) is linked to the mother's two X chromosomes, so the trait will be inherited by all her offspring since they all receive one chromosome from the mother. And because both copies of the trait in the mother are dominant. All her offspring will have the trait.